Transient Thermal Finite Element Analysis of CFC-Cu ITER Monoblock Using X-ray Tomography Data

Llion M Evans, Lee Margetts, Valentina Casalegno, Louise Lever, Joseph Bushell, Tristan Lowe, Andy Wallwork, Phillippe Young, André Lindemann, Marc Schmidt, Paul Mummery

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The thermal performance of a carbon fibre composite-copper monoblock, a sub-component of a fusion reactor divertor, was investigated by finite element analysis. High–-accuracy simulations were created using an emerging technique, image–-based finite element modelling, which converts X-ray tomography data into micro-structurally faithful models, capturing details such as manufacturing defects. For validation, a case study was performed where the thermal analysis by laser flash of a carbon fibre composite-copper disc was simulated such that computational and experimental results could be compared directly. Results showed that a high resolution image-based simulation (102 million elements of 32 μm width) provided increased accuracy over a low resolution image-based simulation (0.6 million elements of 194 μm width) and idealised computer aided design simulations. Using this technique to analyse a monoblock mock–-up, it was possible to detect and quantify the effects of debonding regions at the carbon fibre composite-copper interface likely to impact both component performance and expected lifetime. These features would not have been accounted for in idealised computer aided design simulations.
    Original languageEnglish
    Pages (from-to)100-111
    JournalFusion Engineering and Design
    Volume100
    DOIs
    Publication statusPublished - May 2015

    Keywords

    • Thermal analysis
    • Laser flash
    • Parallel computing
    • Fusion
    • Tokamak
    • Divertor
    • ITER
    • Finite element analysis
    • X-ray tomography
    • Carbon fibre composites
    • High performance computing

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    • STFC Hartree Centre

      Lee Margetts (Visiting researcher)

      27 Jun 20161 Jul 2016

      Activity: External visiting positions or secondmentsVisiting an external academic institutionResearch

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